Java tutorial
/* * Class: EmpiricalChart * Description: * Environment: Java * Software: SSJ * Copyright (C) 2001 Pierre L'Ecuyer and Universit de Montral * Organization: DIRO, Universit de Montral * @author * @since * SSJ is free software: you can redistribute it and/or modify it under * the terms of the GNU General Public License (GPL) as published by the * Free Software Foundation, either version 3 of the License, or * any later version. * SSJ is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * A copy of the GNU General Public License is available at <a href="http://www.gnu.org/licenses">GPL licence site</a>. */ package umontreal.iro.lecuyer.charts; import umontreal.iro.lecuyer.stat.TallyStore; import org.jfree.chart.ChartPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.xy.XYSeriesCollection; import org.jfree.data.xy.XYSeries; import cern.colt.list.DoubleArrayList; import java.util.ListIterator; import java.util.Locale; import java.util.Formatter; import javax.swing.JFrame; /** * This class provides additional tools to create and manage empirical * plots. Empirical plots are used to plot empirical distributions. The * {@link EmpiricalChart} class is the simplest way to produce empirical * plots only. Each {@link EmpiricalChart} object is linked with an * {@link umontreal.iro.lecuyer.charts.EmpiricalSeriesCollection EmpiricalSeriesCollection} * data set. * */ public class EmpiricalChart extends XYChart { protected void init(String title, String XLabel, String YLabel) { // create the chart... chart = ChartFactory.createXYLineChart(title, // chart title XLabel, // x axis label YLabel, // y axis label dataset.getSeriesCollection(), // data PlotOrientation.VERTICAL, true, // include legend true, // tool tips false // urls ); ((XYPlot) chart.getPlot()).setRenderer(dataset.getRenderer()); // Initialize axis variables XAxis = new Axis((NumberAxis) ((XYPlot) chart.getPlot()).getDomainAxis(), Axis.ORIENTATION_HORIZONTAL); YAxis = new Axis((NumberAxis) ((XYPlot) chart.getPlot()).getRangeAxis(), Axis.ORIENTATION_VERTICAL); fixZeroPoint(); } private void fixZeroPoint() { // reset the first point (x0, 0) with x0 at the beginning of x-axis double xmin = Math.min(XAxis.getAxis().getRange().getLowerBound(), XAxis.getTwinAxisPosition()); XYSeriesCollection col = (XYSeriesCollection) dataset.getSeriesCollection(); for (int i = 0; i < col.getSeriesCount(); i++) { XYSeries ser = col.getSeries(i); ser.remove(0); // remove temporary 0-point ser.add(xmin, 0); // replace } } /** * Initializes a new <TT>EmpiricalChart</TT> instance with an empty data set. * */ public EmpiricalChart() { super(); dataset = new EmpiricalSeriesCollection(); init(null, null, null); } /** * Initializes a new <TT>EmpiricalChart</TT> instance with data <TT>data</TT>. * <TT>title</TT> is a title, <TT>XLabel</TT> is a short description of * the <SPAN CLASS="MATH"><I>x</I></SPAN>-axis and <TT>YLabel</TT> a short description of the <SPAN CLASS="MATH"><I>y</I></SPAN>-axis. * The input vectors <TT>data</TT> represents a collection of observation sets. * Each vector of <TT>data</TT> represents a <SPAN CLASS="MATH"><I>x</I></SPAN>-coordinates set. * Therefore <TT>data</TT> * <SPAN CLASS="MATH">[<I>i</I>], <I>i</I> = 0,…, <I>n</I> - 1</SPAN>, is used to draw the <SPAN CLASS="MATH"><I>i</I></SPAN>-th plot. * The values of each observation set <TT>data</TT><SPAN CLASS="MATH">[<I>i</I>]</SPAN> <SPAN CLASS="textit">must be sorted</SPAN> * in increasing order. * * @param title chart title. * * @param XLabel Label on <SPAN CLASS="MATH"><I>x</I></SPAN>-axis. * * @param YLabel Label on <SPAN CLASS="MATH"><I>y</I></SPAN>-axis. * * @param data series of point sets. * * */ public EmpiricalChart(String title, String XLabel, String YLabel, double[]... data) { super(); dataset = new EmpiricalSeriesCollection(data); init(title, XLabel, YLabel); } /** * Initializes a new <TT>EmpiricalChart</TT> instance with a set of points * <TT>data</TT>. <TT>title</TT> is a title, <TT>XLabel</TT> is a short * description of the <SPAN CLASS="MATH"><I>x</I></SPAN>-axis and <TT>YLabel</TT> a short description of the * <SPAN CLASS="MATH"><I>y</I></SPAN>-axis. Vector <TT>data</TT> represents a <SPAN CLASS="MATH"><I>x</I></SPAN>-coordinates set. The values * of this observation set <SPAN CLASS="textit">must be sorted</SPAN> in increasing order. Only * <SPAN CLASS="textit">the first</SPAN> <TT>numPoints</TT> of <TT>data</TT> will * be considered to plot. * * @param title chart title. * * @param XLabel Label on <SPAN CLASS="MATH"><I>x</I></SPAN>-axis. * * @param YLabel Label on <SPAN CLASS="MATH"><I>y</I></SPAN>-axis. * * @param data series of point sets. * * @param numPoints number of points to plot * * */ public EmpiricalChart(String title, String XLabel, String YLabel, double[] data, int numPoints) { super(); dataset = new EmpiricalSeriesCollection(data, numPoints); init(title, XLabel, YLabel); } /** * Similar to the above constructor, but with <TT>DoubleArrayList</TT>. * A {@link cern.colt.list.DoubleArrayList DoubleArrayList} from the Colt library is * used to store data. The values of each observation set <TT>data</TT><SPAN CLASS="MATH">[<I>i</I>]</SPAN> * <SPAN CLASS="textit">must be sorted</SPAN> in increasing order. * * @param title chart title. * * @param XLabel Label on <SPAN CLASS="MATH"><I>x</I></SPAN>-axis. * * @param YLabel Label on <SPAN CLASS="MATH"><I>y</I></SPAN>-axis. * * @param data series of point sets. * * */ public EmpiricalChart(String title, String XLabel, String YLabel, DoubleArrayList... data) { super(); dataset = new EmpiricalSeriesCollection(data); init(title, XLabel, YLabel); } /** * Initializes a new <TT>EmpiricalChart</TT> instance with data arrays * contained in each * {@link umontreal.iro.lecuyer.stat.TallyStore TallyStore} object. The input * parameter <TT>tallies</TT> represents a collection of observation sets. * Therefore, the <SPAN CLASS="MATH"><I>i</I></SPAN>-th <TT>tallies</TT> is used to draw * the <SPAN CLASS="MATH"><I>i</I></SPAN>-th plot. * * @param title chart title. * * @param XLabel Label on <SPAN CLASS="MATH"><I>x</I></SPAN>-axis. * * @param YLabel Label on <SPAN CLASS="MATH"><I>y</I></SPAN>-axis. * * @param tallies series of observation sets. * * */ public EmpiricalChart(String title, String XLabel, String YLabel, TallyStore... tallies) { super(); dataset = new EmpiricalSeriesCollection(tallies); init(title, XLabel, YLabel); } /** * Initializes a new <TT>EmpiricalChart</TT> instance with data <TT>data</TT>. * The input parameter <TT>data</TT> represents a set of plotting data. * <TT>XYSeriesCollection</TT> is a <TT>JFreeChart</TT>-like container class * used to store and manage observation sets. * * @param title chart title. * * @param XLabel Label on <SPAN CLASS="MATH"><I>x</I></SPAN>-axis. * * @param YLabel Label on <SPAN CLASS="MATH"><I>y</I></SPAN>-axis. * * @param data series collection. * */ public EmpiricalChart(String title, String XLabel, String YLabel, XYSeriesCollection data) { super(); dataset = new EmpiricalSeriesCollection(data); init(title, XLabel, YLabel); } /** * Returns the chart's dataset. * * @return the chart's dataset. * */ public EmpiricalSeriesCollection getSeriesCollection() { return (EmpiricalSeriesCollection) dataset; } /** * Links a new dataset to the current chart. * * @param dataset new dataset. * * */ public void setSeriesCollection(EmpiricalSeriesCollection dataset) { this.dataset = dataset; } /** * Synchronizes <SPAN CLASS="MATH"><I>x</I></SPAN>-axis ticks to the <SPAN CLASS="MATH"><I>s</I></SPAN>-th series <SPAN CLASS="MATH"><I>x</I></SPAN>-values. * * @param s series used to define ticks. * * */ public void setTicksSynchro(int s) { XYSeriesCollection seriesCollection = (XYSeriesCollection) this.dataset.getSeriesCollection(); double[] values = new double[seriesCollection.getItemCount(s)]; for (int i = 0; i < seriesCollection.getItemCount(s); i++) values[i] = seriesCollection.getXValue(s, i); XAxis.setLabels(values); } /** * Displays chart on the screen using Swing. * This method creates an application containing a chart panel displaying * the chart. The created frame is positioned on-screen, and displayed before * it is returned. The <TT>width</TT> and the <TT>height</TT> * of the chart are measured in pixels. * * @param width frame width in pixels. * * @param height frame height in pixels. * * @return frame containing the chart. * */ public JFrame view(int width, int height) { JFrame myFrame; if (chart.getTitle() != null) myFrame = new JFrame("EmpiricalChart from SSJ : " + chart.getTitle().getText()); else myFrame = new JFrame("EmpiricalChart from SSJ"); ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(width, height)); myFrame.setContentPane(chartPanel); myFrame.pack(); myFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); myFrame.setLocationRelativeTo(null); myFrame.setVisible(true); return myFrame; } public String toLatex(double width, double height) { double xunit, yunit; double[] save = new double[4]; if (dataset.getSeriesCollection().getSeriesCount() == 0) throw new IllegalArgumentException("Empty chart"); //Calcul des parametres d'echelle et de decalage double XScale = computeXScale(XAxis.getTwinAxisPosition()); double YScale = computeYScale(YAxis.getTwinAxisPosition()); xunit = width / ((Math.max(XAxis.getAxis().getRange().getUpperBound(), XAxis.getTwinAxisPosition()) * XScale) - (Math.min(XAxis.getAxis().getRange().getLowerBound(), XAxis.getTwinAxisPosition()) * XScale)); //taille d'une unite en x et en cm dans l'objet "tikzpicture" yunit = height / ((Math.max(YAxis.getAxis().getRange().getUpperBound(), YAxis.getTwinAxisPosition()) * YScale) - (Math.min(YAxis.getAxis().getRange().getLowerBound(), YAxis.getTwinAxisPosition()) * YScale)); //taille d'une unite en y et en cm dans l'objet "tikzpicture" Formatter formatter = new Formatter(Locale.US); /*Entete du document*/ if (latexDocFlag) { formatter.format("\\documentclass[12pt]{article}%n%n"); formatter.format("\\usepackage{tikz}%n\\usetikzlibrary{plotmarks}%n\\begin{document}%n%n"); } if (chart.getTitle() != null) formatter.format("%% PGF/TikZ picture from SSJ : %s%n", chart.getTitle().getText()); else formatter.format("%% PGF/TikZ picture from SSJ %n"); formatter.format("%% XScale = %s, YScale = %s, XShift = %s, YShift = %s%n", XScale, YScale, XAxis.getTwinAxisPosition(), YAxis.getTwinAxisPosition()); formatter.format("%% Therefore, thisFileXValue = (originalSeriesXValue+XShift)*XScale%n"); formatter.format("%% and thisFileYValue = (originalSeriesYValue+YShift)*YScale%n%n"); if (chart.getTitle() != null) formatter.format("\\begin{figure}%n"); formatter.format("\\begin{center}%n"); formatter.format("\\begin{tikzpicture}[x=%scm, y=%scm]%n", xunit, yunit); formatter.format("\\footnotesize%n"); if (grid) formatter.format("\\draw[color=lightgray] (%s, %s) grid[xstep = %s, ystep=%s] (%s, %s);%n", (Math.min(XAxis.getAxis().getRange().getLowerBound(), XAxis.getTwinAxisPosition()) - XAxis.getTwinAxisPosition()) * XScale, (Math.min(YAxis.getAxis().getRange().getLowerBound(), YAxis.getTwinAxisPosition()) - YAxis.getTwinAxisPosition()) * YScale, xstepGrid * XScale, ystepGrid * YScale, (Math.max(XAxis.getAxis().getRange().getUpperBound(), XAxis.getTwinAxisPosition()) - XAxis.getTwinAxisPosition()) * XScale, (Math.max(YAxis.getAxis().getRange().getUpperBound(), YAxis.getTwinAxisPosition()) - YAxis.getTwinAxisPosition()) * YScale); setTick0Flags(); formatter.format("%s", XAxis.toLatex(XScale)); formatter.format("%s", YAxis.toLatex(YScale)); formatter.format("%s", dataset.toLatex(XScale, YScale, XAxis.getTwinAxisPosition(), YAxis.getTwinAxisPosition(), XAxis.getAxis().getLowerBound(), XAxis.getAxis().getUpperBound(), YAxis.getAxis().getLowerBound(), YAxis.getAxis().getUpperBound())); formatter.format("\\end{tikzpicture}%n"); formatter.format("\\end{center}%n"); if (chart.getTitle() != null) { formatter.format("\\caption{"); formatter.format(chart.getTitle().getText()); formatter.format("}%n\\end{figure}%n"); } if (latexDocFlag) formatter.format("\\end{document}%n"); return formatter.toString(); } }